The soundwares are 100 Watt speakers so your options are many. I would suggest any of the following, depends on your budget which would be suitable:

Pioneer VSX-921 (450 pounds, 4 stars from whathifi)

Sony STR-DH820 (300 pounds, 5 stars from whathifi)

Yamaha RX-V671 (500 pounds, 5 stars from whathifi)

Denon AVR-1912 (450 pounds, 4 stars from whathifi)

Onkyo TX-NR609 (500 pounds, 5 stars from whathifi) Current favorite.

All of the above AV receivers are the new 2011 range, they are all capable of 3D as well as far as I know. Depends on what you need from your AV receiver you could go for lower ends of the ranges from Onkyo TX-N509, Denon 1612, etc.

Do audition your shortlist once you narrow your options and get the one that sounds best. In my experience most shops that stock soundware SX speakers will have them set up in their auditioning room as they are quite popular, just ask the sales guy to hook up the amp you are interested in and listen to what sounds best to you.